JP3977462B2 - 11- (Substituted phenyl) -estradi-4,9-diene derivatives - Google Patents

11- (Substituted phenyl) -estradi-4,9-diene derivatives Download PDF

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JP3977462B2
JP3977462B2 JP21282496A JP21282496A JP3977462B2 JP 3977462 B2 JP3977462 B2 JP 3977462B2 JP 21282496 A JP21282496 A JP 21282496A JP 21282496 A JP21282496 A JP 21282496A JP 3977462 B2 JP3977462 B2 JP 3977462B2
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ロナルデ・ヘベハルデ
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ナームローゼ・フエンノートチヤツプ・オルガノン
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Description

【0001】
【発明の属する技術分野】
本発明は、11−(置換フェニル)−エストラ−4,9−ジエン誘導体、該誘導体を製造する方法、該誘導体を含有する医薬組成物、並びに医薬の製造への該誘導体の使用に係わる。
【0002】
【従来の技術】
様々な11−(置換フェニル)−エストラ−4,9−ジエン誘導体が当業者に公知である。例えばドイツ特許第3307143号には、11、13、16及び17位に様々な置換基を有し得るステロイドが開示されている。この特許によれば、開示されたステロイド誘導体は糖質コルチコイド及びプロゲステロン受容体に対して顕著な親和性を有し、加えてアンドロゲン受容体に対しても相当の親和性を有する。このドイツ特許には、上記ステロイド誘導体が抗糖質コルチコイド活性を有することも示されている。
【0003】
しかし、Philibert等(M. K. Agarwal編, Antihormones in Health and Disease, Front Horm. Res. Basel, Karger, 1991, vol.19, pp.1−17)は、上記ドイツ特許に開示された11−(置換フェニル)−エストラ−4,9−ジエン誘導体はin vivoでさほど活性でない抗糖質コルチコイドステロイドである[例えば11−(m−メトキシフェニル)−及び11−(m−メチルチオフェニル)−誘導体]か、または比較的高いプロゲステロン受容体結合親和性を有する[11−(p−メトキシフェニル)−及び11−(p−メチルチオフェニル)−誘導体など]ことを発見した。このような特性は化合物の治療能を甚だしく制約する。in vivo活性が低い誘導体は治療に用いる場合大量に投与しなければならない。その結果有害な副作用の発生率が上昇する恐れは大きい。そのうえ、高いプロゲステロン受容体結合親和性は(抗)プロゲスタゲン(progestagenic)活性をもたらしかねず、このことは化合物が2種以上の(抗)ホルモン活性を示し得、それによって当該化合物の、特に長期治療への臨床使用が制限されることを意味する。
【0004】
【発明が解決しようとする課題】
即ち、高い糖質コルチコイド受容体結合親和性を有する上に高いin vivo抗糖質コルチコイド活性も有し、その一方でアンドロゲン(androgenic)活性及びプロゲスタゲン活性といった他のホルモン活性は低い化合物が必要とされている。
【0005】
【課題を解決するための手段】
本発明者は、式I
【0006】
【化3】

Figure 0003977462
【0007】
〔式中
Aは、独立にOまたはSである、互いに結合しない2個のヘテロ原子を有する5または6員環の残基であり、この環は場合によっては1個以上のハロゲン原子で置換されており、または
Aは、星印で示した位置でフェニル基に結合するOまたはSである1個のヘテロ原子を有する、炭素−炭素二重結合を有しない5または6員環の残基であり、この環は場合によっては1個以上のハロゲン原子で置換されており、
1はHまたは1−オキソ(C1〜C4)アルキルであり、
2はH、(C1〜C8)アルキル、ハロゲンまたはCF3であり、
Xは(H,OH)、O及びNOHの中から選択され、
破線は、場合によっては存在する結合を表わす〕の11−(置換フェニル)−エストラ−4,9−ジエン誘導体は特異的でかつ高い糖質コルチコイド受容体結合親和性を有し、しかもin vivoで高活性であり、優勢な抗糖質コルチコイド活性を示すことを発見した。
【0008】
【発明の実施の形態】
この化合物は、無機質コルチコイド、プロゲステロン、エストロゲン及びアンドロゲン受容体に対しては明らかな親和性を有せず、完全な(clean)副作用プロフィールを示す。
【0009】
本発明の11−(置換フェニル)−エストラ−4,9−ジエン誘導体は、クッシング症候群、糖尿病、緑内障、睡眠障害、抑鬱症、不安症、アテローム性動脈硬化症、高血圧症、脂肪症、骨粗鬆症、及び麻薬禁断症状、並びにこれらの併発状態(mixtures)などの糖質コルチコイド依存性疾患または症状の予防及び治療に用い得る。
【0010】
好ましい本発明による化合物は、1個以上のヘテロ原子がOであり、5または6員環は1個以上のフッ素原子で任意に置換されており、R1はHであり、XはOまたはNOHである11−(置換フェニル)−エストラ−4,9−ジエン誘導体である。
【0011】
更に好ましい化合物は、Aが5員環の残基である11−(置換フェニル)−エストラ−4,9−ジエン誘導体である。AがOである2個のヘテロ原子を有する11−(置換フェニル)−エストラ−4,9−ジエン誘導体が特に好ましい。
【0012】
2がメチルであり、破線が結合を表わす11−(置換フェニル)−エストラ−4,9−ジエン誘導体は特に好ましい。
【0013】
最も好ましい化合物は、(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンである。
【0014】
「ハロゲン」という語は、フッ素、塩素、臭素またはヨウ素原子を意味する。環Aにおいて好ましいハロゲンはフッ素であり、またR2がハロゲンである場合好ましいのは塩素である。
【0015】
1及びR2の定義において用いた「(C1〜C4)アルキル」及び「(C1〜C8)アルキル」という語は、1〜4個及び1〜8個の炭素原子を有するアルキル基をそれぞれ意味し、それらは例えばメチル、エチル、プロピル、イソプロピル、ブチル、s−ブチル、t−ブチル、ペンチル、ネオペンチル、ヘキシル、オクチルなどである。
【0016】
本発明による11−(置換フェニル)−エストラ−4,9−ジエン誘導体は、式II
【0017】
【化4】
Figure 0003977462
【0018】
〔式中A、R2及び破線は請求項1に定義したとおりであり、R1はHであり、Pは保護されたケト基である〕の化合物を脱水及び脱保護し、その後場合によっては17β−OHを適当なカルボン酸との反応によりエステル化してR1が1−オキソ(C1〜C4)アルキルである誘導体を得、また場合によっては3−オキソ基を対応する3−ヒドロキシまたは3−オキシムに変換する方法によって製造し得る。3−オキソ基をホウ水素化ナトリウムなどの適当な還元剤を用いて還元すれば、3−ヒドロキシ誘導体を製造することができる。3−オキシム誘導体は、ピリジンなどの適当な溶媒中でのヒドロキシルアミン処理によって製造可能である。
【0019】
式IIの誘導体は、ステロイドの製造に関して開示及び使用されている周知の方法で製造し得る。
【0020】
式IIの誘導体の製造に適する一方法は、エストラ−4,9−ジエン−3,17−ジオンから出発する。17−ケト基を例えばホウ水素化ナトリウムで選択的に還元して17β−OH、17α−Hとし、次に3−ケト基を例えばエチレングリコール、トリエチルオルトホルメート及びp−トルエンスルホン酸でのケタール化によって保護し、かつ17−ヒドロキシ基を例えばクロロクロム酸ピリジニウムで酸化することによって3−ケト保護エストラ−5(10),9(11)−ジエン−3,17−ジオンを得る。17位をアルキニル化し(17α−アルキニル、17β−OH誘導体が得られる)、次に5(10)二重結合を、例えばヨーロッパ特許出願第0 298 020号に開示された方法に従いジクロロメタン中で過酸化水素、トリフルオロアセトフェノン及びピリジンでエポキシ化して3−ケト保護5α,10α−エポキシ−17α−アルキニル−17β−ヒドロキシ−エストル−9(11)−エン−3−オンを得る。その後このエポキシド誘導体から、例えば式
【0021】
【化5】
Figure 0003977462
【0022】
〔式中Xはリチウムなどの(アルカリ)金属であるか、またはマグネシウムハロゲン化物、好ましくは臭化マグネシウムである〕の有機金属化合物と反応させることによって式IIの化合物を製造する。
【0023】
適当な保護基、及びそれらの基を除去する方法は、例えばT. W. Green, Protective Groups in Organic Synthesis, Wiley, NY, 1981から当業者に公知である。ケト基の保護に特に適する保護基はアセタールで、例えば1,2−エチレンケタールである。
【0024】
本発明の化合物は、好ましくはヒトに対して体重1kg当たり0.001〜100mg、好ましくは0.01〜10mgの1日投与量で経口または非経口投与し得る。本発明の化合物は、例えば標準的な参考文献であるGennaro等,Remington’s Pharmaceutical Sciences, 18th ed., Mack Publishing Company,1990(特にPart 8: Pharmaceutical Preparations and Their Manufacture参照)に記載されているような、医薬に適した補助物質と混合して、丸剤、錠剤といった固体投与単位に圧縮成形したり、カプセル剤または坐剤に加工したりすることができる。医薬に適した液体を用いれば、本発明の化合物を、例えば注射剤もしくは点眼剤として、または鼻内噴霧剤などの噴霧剤として用いる溶液、懸濁液、乳濁液の形態で適用することも可能である。
【0025】
投与単位、例えば錠剤の製造では、賦形剤、着色剤、ポリマー結合剤等といった通常の添加物の使用が考えられる。通常、医薬に許容可能で、かつ活性化合物の機能を妨げないものであれば任意の添加物を用い得る。
【0026】
本発明の化合物の投与を可能にする組成物中に用いるのに適したキャリヤには、適量で用いられるラクトース、澱粉、セルロース誘導体等、またはこれらの混合物が含まれる。
【0027】
【実施例】
本発明を、以下の実施例によって更に詳述する。
【0028】
実施例1
(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オン
a) 19.3g(788mmol)のMgと、58ml(775mmol)の臭化エチルとを反応させて製造した臭化エチルマグネシウムを1lのTHFに溶解させた溶液を0〜5℃に冷却した。このグリニャール溶液に83ml(1.46mol)の(ドライアイス/アセトン冷却シリンダー内で予め凝縮させた)プロピンをゆっくり通気した。その後、200mlのTHFに溶解させた50g(159mmol)のエストラ−5(10),9(11)−ジエン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)(ヨーロッパ特許第0683172号参照)を、氷冷しながら上記溶液に滴下し加えた。攪拌を周囲温度で1時間継続した。混合物を塩化アンモニウムの飽和水溶液中へ注ぎ、続いて酢酸エチルで抽出する(2回)ことによって後処理を行なった。有機層をブラインで洗浄し、無水硫酸マグネシウムで脱水し、濾過し、かつ蒸発させて58.4gの粗な17α−プロピニル−17β−ヒドロキシ−エストラ−5(10),9(11)−ジエン−3−オン−3−(環状1,2−エタンジイルアセタール)を得た。
【0029】
b) a)で得られた生成物を809mlのジクロロメタンに溶解させた。これに、4.8mlのピリジン、15.2mlのトリフルオロアセトフェノン及び219mlの30%過酸化水素を添加し、得られた二相系を周囲温度で36時間激しく攪拌した。混合物を水中へ注ぎ、有機層を分離し、チオ硫酸ナトリウムの飽和溶液で2回洗浄した。無水硫酸マグネシウムで脱水し、濾過し、かつ蒸発させて半固体の残留物を得た。ジエチルエーテルから結晶化させて、m.p.191℃の5α,10α−エポキシ−17α−プロピニル−17β−ヒドロキシ−エストル−9(11)−エン−3−オン−3−(環状1,2−エタンジイルアセタール)を29.4g得た。
【0030】
c) 1.9g(77.6mmol)のMgと9.27ml(77.0mmol)の4−ブロモ−1,2−(メチレンジオキソ)ベンゼンとから製造した3,4−(メチレンジオキソ)フェニルマグネシウムブロミドを125mlの乾燥THFに溶解させた溶液に0〜5℃において534mgのCuClを添加した。0〜5℃で30分間攪拌後、125mlの乾燥THFに溶解させた9.5g(25.7mmol)の5α,10α−エポキシ−17α−プロピニル−17β−ヒドロキシ−エストル−9(11)−エン−3−オン−3−(環状1,2−エタンジイルアセタール)を、温度を10℃より低く維持しながら添加した。攪拌を周囲温度で1時間継続した。混合物を塩化アンモニウムの飽和溶液中へ注ぎ、酢酸エチルで抽出する(2回)ことによって後処理を行なった。一つに合わせた有機層をブラインで洗浄し、無水硫酸マグネシウムで脱水し、濾過し、濃縮した。残留物をヘプタンと共に粉砕して、次のステップで用いるのに十分な純度の5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−プロピニル−エストル−9−エン−3−オン−3−(環状1,2−エタンジイルアセタール)を12.25g得た。
【0031】
d) c)で得られた化合物5g(10.2mmol)を150mlのアセトンに溶解させた。溶液を0〜5℃に冷却し、10mlの6N H2SO4添加後、混合物を1時間攪拌した。次に、低温のこの溶液を重炭酸ナトリウムの飽和溶液中へ注ぎ、混合物を酢酸エチルで抽出した(2回)。一つに合わせた有機層をブラインで洗浄し、無水硫酸マグネシウムで脱水し、濾過し、濃縮した。溶離剤としてヘプタン−酢酸エチル[80:20(v/v %)]を用いるクロマトグラフィーによって3gの(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンを得た。ジエチルエーテルから結晶化させて、m.p.212.6〜214℃の結晶2.4gを得た。
【0032】
実施例2
3E−及び3Z−(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンオキシム
実施例1のd)で得られた生成物1.3g(3mmol)を33mlのピリジンに溶解させた。これに1.05g(15mmol)の塩酸ヒドロキシルアミンを添加し、混合物を室温で2時間攪拌した。混合物を水中へ注ぎ、稀塩酸で中和し、酢酸エチルで抽出した。有機層をブラインで洗浄し、硫酸マグネシウムで脱水し、濾過し、蒸発乾固した。粗なオキシムを、シリカゲルと、溶離剤としてのヘプタン−酢酸エチル[70:30(v/v %)]とを用いるクロマトグラフィー分離に掛けた。その結果、比旋光度[α]D 20=+64°(c=0.5; ジオキサン)の(3E,11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンオキシム1gと、比旋光度[α]D 20=+36°(c=0.5; ジオキサン)の(3Z,11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンオキシム400mgとを得た。
【0033】
実施例3
(11β,17β)−11−(2,3−ジヒドロ−1,4−ベンゾジオキシン−6−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オン
a) 実施例1のc)に述べた操作に従い、6.02g(28mmol)の6−ブロモ−1,4−ベンゾジオキサンと、729mg(30mmol)のMgと、90mgのCuClと、2.5g(7mmol)の、実施例1のb)で製造したエポキシドとから2.8gの5α,17β−ジヒドロキシ−11β−(2,3−ジヒドロ−1,4−ベンゾジオキシン−6−イル)−17α−プロピニル−エストル−9−エン−3−オン−3−(環状1,2−エタンジイルアセタール)を得た。
【0034】
b) 実施例1のd)に述べた操作に従い、先に得られた上記物質を加水分解し、続いてクロマトグラフィー精製に掛けて2.22gの(11β,17β)−11−(2,3−ジヒドロ−1,4−ベンゾジオキシン−6−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンを得た。ジエチルエーテル−ジイソプロピルエーテルから結晶化させて、m.p.200〜202℃の結晶1.78gを得た。
【0035】
実施例4
(11β,17β)−11−(2,2−ジフルオロ−1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オン
a) 実施例1のc)に述べた操作に従い、5.2gの2,2−(ジフルオロメチレン−ジオキソ)フェニルマグネシウムブロミド(J. Org. Chem. 37, p.673, 1972参照)を2gの5α,10α−エポキシ−17α−プロピニル−17β−ヒドロキシ−エストル−9(11)−エン−3−オン−3−(環状1,2−エタンジイルアセタール)とCu触媒下にグリニャール反応させて、2.7gの11β−(2,2−ジフルオロ−1,3−ベンゾジオキソル−5−イル)−5α,17β−ジヒドロキシ−17α−プロピニル−エストル−9−エン−3−オン−3−(環状1,2−エタンジイルアセタール)を得た。
【0036】
b) 実施例1のd)に述べた操作に従い、先に得られた上記物質を加水分解し、続いてクロマトグラフィー精製に掛けて、比旋光度[α]D 20=+14°(c=1; ジオキサン)の(11β,17β)−11−(2,2−ジフルオロ−1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オン1.5gを得た。
【0037】
実施例5
(11β,17β)−11−[6−(2,3−ジヒドロベンゾフラニル)]−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オン
a) 実施例1のc)に述べた操作に従い、4.8g(24mmol)の6−ブロモ−2,3−ジヒドロベンゾフラン(下記参照)と、583mg(24mmol)のMgと、120mgのCuClと、2.22g(6mmol)の、実施例1のb)で製造したエポキシドとから2.1gの5α,17β−ジヒドロキシ−11β−(2,3−ジヒドロベンゾフラン−6−イル)−17α−プロピニル−エストル−9−エン−3−オン−3−(環状1,2−エタンジイルアセタール)を白色の非晶質物質として得、この物質はジエチルエーテルから結晶化させることができた。
【0038】
b) 実施例1のd)に述べた操作に従い、先に得られた上記物質を加水分解し、続いてクロマトグラフィー精製に掛けて1.46gの(11β,17β)−11−[6−(2,3−ジヒドロベンゾフラニル)]−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンを、比旋光度[α]D 20=+48°(c=1; ジオキサン)の白色の非晶質物質として得た。
【0039】
6−ブロモ−2,3−ジヒドロベンゾフラン
a) 2,3−ジヒドロ−6−トリフルオロメチルスルホニルオキシ−ベンゼン4.8g(10mmol)の6−ヒドロキシクマラン(J. Am. Chem. Soc. 70, p.3620, 1948)及び23.6g(192mmol)のN,N−ジメチルアミノピリジンを400mlの乾燥ジクロロメタンに溶解させた。溶液を−60℃に冷却し、これに、120mlの乾燥ジクロロメタンに溶解させた8.52mlのトリフルオロメタンスルホン酸無水物をゆっくり滴下し加えた。−60℃で45分間攪拌後、反応混合物を炭酸水素ナトリウムの飽和溶液中へ注ぐことによって反応を停止させた。ジクロロメタンで抽出し、かつ硫酸ナトリウムで脱水して粗なトリフレートを得た。[溶離剤として90:10(v/v %)のヘプタン−酢酸エチルを用いるシリカゲル上での]カラムクロマトグラフィーによって精製して、8.4gの純粋なトリフレートを得た。
【0040】
b) 2,3−ジヒドロ−6−トリメチルスタンニル−ベンゼン
上述のように製造したトリフレート8.04g(30mmol)を135mlのジオキサンに溶解させ、これに15g(45mmol)のヘキサメチルジチン、3.81g(90mmol)の塩化リチウム及び700mgのPd(φ3P)4(φ=フェニル)を添加し、混合物を17時間還流させた。追加分として500mgのPd(φ3P)4を添加し、還流を更に15時間継続した。GC分析によって反応の完了を確認した。45mlの1Mフッ化カリウム水溶液を添加し、1時間攪拌し、かつセライトで濾過することによって後処理を行なった。蒸発、及びカラムクロマトグラフィーでの精製によって8.1gの2,3−ジヒドロ−6−トリメチルスタンニル−ベンゼンを得た。
【0041】
c) 6−ブロモ−2,3−ジヒドロベンゾフラン
8.1g(28.5mmol)の2,3−ジヒドロ−6−トリメチルスタンニル−ベンゼンを100mlの乾燥ジクロロメタンに溶解させた。混合物を氷冷し、これにBr2のジクロロメタン溶液を、橙色が残るまでゆっくり添加した(約1当量添加)。混合物を濃縮し、溶離剤として95:5(v/v %)のヘプタン−酢酸エチルを用いるカラムクロマトグラフィーによって精製して4.5gの6−ブロモ−2,3−ジヒドロベンゾフランを無色の油として得た。
【0042】
実施例6
(11β,17α)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21,27−トリノルコレスタ−4,9−ジエン−20(22)−イン−3−オン
a) 11.52g(473mmol)のマグネシウムと57.64ml(465mmol)の4−ブロモ−1,2−メチレンジオキソベンゼンとから製造した3,4−(メチレンジオキソ)フェニルマグネシウムブロミドを230mlのTHFに溶解させた溶液を0〜5℃において、46g(139.5mmol)の5α,10α−エポキシ−エストル−9(11)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)及び2.1gのCuClを465mlの乾燥THFに溶解させた溶液に滴下し加えた。0〜5℃で1時間攪拌後、混合物を塩化アンモニウムの飽和溶液へ注ぐことによって後処理を行なった。酢酸エチルで抽出し、かつ硫酸マグネシウムで脱水して粗な5α−ヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)を得た。カラムクロマトグラフィーで精製して、56.3gの純粋な生成物を非晶質の泡として得た。
【0043】
b) 7.1ml(60mmol)のヘキシンを100mlの乾燥THFに加えた溶液を−50℃において35.8mlの1.4M n−BuLiで処理し、これに、a)で得られた生成物4.52g(10mmol)を50mlの乾燥THFに溶解させた溶液を滴下し加えた。溶液を−20℃に加温し、2時間後TLCによって反応の完了を確認した。通常の後処理を行なって、次のステップで用いるのに十分な純度の5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−ヘキシニル−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)を4.9g得た。
【0044】
同様にして、b1) 5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−ペンチニル−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール); b2)5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−オクチニル−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール); 及びb3) 5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−イソペンチニル−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)も製造した。
【0045】
c) b)で得られた生成物1.2gを60mlのアセトンに溶解させた。溶液を0〜5℃に冷却し、2.4mlの6N H2SO4溶液を添加した。1時間後、混合物を1N NaOH溶液で中和し、続いて酢酸エチルで抽出し、脱水し、溶媒を蒸発させた。クロマトグラフィーで精製して、[α]D 20=26°(c=1; ジオキサン)の純粋な(11β,17α)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21,27−トリノルコレスタ−4,9−ジエン−20(22)−イン−3−オンを660mg得た。
【0046】
同様にして、c1) [α]D 20=25.8°(c=1; ジオキサン)の(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−ペンチニル)エストラ−4,9−ジエン−3−オン; c2) [α]D 20=13.4°(c=0.5; ジオキサン)の(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−オクチニル)エストラ−4,9−ジエン−3−オン; 及びc3)[α]D 20=22.7°(c=0.5; ジオキサン)の(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21−ジノルコレスタ−4,9−ジエン−20(22)−イン−3−オンを製造した。
【0047】
実施例7
(11β,17α,20E)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21,27−トリノルコレスタ−4,9,20(22)−トリエン−3−オン
a) 342mg(9mmol)のLiAlH4を35mlの乾燥THF中に懸濁させた。氷冷下に、実施例6のb)で得られた物質1.6gの溶液を添加し、混合物を24時間還流させた。硫酸マグネシウムの飽和溶液1.75mlを注意深く添加することによって後処理を行ない、攪拌を1時間継続し、その後固体硫酸マグネシウムを添加し、混合物をセライトで濾過した。蒸発、及びカラムクロマトグラフィーでの精製によって700mgの粗な20E−5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−(1−ヘキセニル)−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)を得た。
【0048】
b) 実施例1のd)に述べた操作に従い、先に得られた上記物質を(11β,17α,20E)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21,27−トリノルコレスタ−4,9,20(22)−トリエン−3−オンに変換した。この物質は[α]D 20=75.7°(c=1; ジオキサン)の非晶質固体として得られた。
【0049】
実施例8
(11β,17α,20Z)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21,27−トリノルコレスタ−4,9,20(22)−トリエン−3−オン
a) 実施例6のb)で得られた物質1.9gを50mlの酢酸エチルに溶解させた。171mgのリンドラー触媒を添加し、混合物を吸収が停止するまで水素雰囲気中で振盪した。混合物をセライトで濾過し、かつ蒸発させてほぼ純粋な20Z,5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−(1−ヘキセニル)−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)を得た。
【0050】
b) 実施例1のd)に述べた操作に従い、先に得られた上記物質を所望の(11β,17α,20Z)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−19,21,27−トリノルコレスタ−4,9,20(22)−トリエン−3−オンに変換した。この物質は[α]D 20=107°(c=0.5; ジオキサン)の非晶質固体として得られた。
【0051】
実施例9
(11β,17α)−11−(1,3−ベンゾジオキソル−5−イル)−21−クロロ−17−ヒドロキシ−19−ノルプレグナ−4,9−ジエン−20−イン−3−オン
a) メチルリチウムの2.2Mジエチルエーテル溶液12mlを0℃に冷却した。この溶液に、5.5mlのジエチルエーテルに溶解させた1.32gのトランス−1,2−ジクロロエテンをゆっくり添加し、それによって温度を10℃より低く維持した。攪拌を周囲温度で1.5時間継続した。この間にLiClの白色懸濁液が生じた。次に、実施例6のa)で得られたステロイド1.5gを乾燥トルエンに溶解させたものを添加し、混合物を2.5時間還流させた。TLCで反応の完了を確認した。混合物を塩化アンモニウムの飽和溶液へ注ぎ、酢酸エチルで抽出し、脱水し、かつ蒸発させることによって後処理を行ない、それによって1.5gの粗な5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−クロロエチニル−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)を白色のガラスとして得た。
【0052】
b) 前の実験で得られた物質を、実施例1のd)に述べた操作に従い粗な(11β,17α)−11−(1,3−ベンゾジオキソル−5−イル)−21−クロロ−17−ヒドロキシ−19−ノルプレグナ−4,9−ジエン−20−イン−3−オンに変換した。ジエチルエーテルから結晶化させて、m.p.209℃の純粋な化合物を464mg得た。
【0053】
実施例10
(11β,17α)−11−(1,3−ベンゾジオキソル−5−イル)−21−トリフルオロメチル−17−ヒドロキシ−19−ノルプレグナ−4,9−ジエン −20−イン−3−オン
a) J. Org. Chem. 19, p.6051, 1995に記載された操作に従い、実施例6のa)で製造したステロイド2g(4.4mmol)と、1.94g(11mmol)の1−ブロモ−1−トリフルオロメチルエテンと、20mmolのLDA(n−BuLiの1.6M溶液12.5mlと、3.1mlのN,N−ジイソプロピルアミンとから製造)とを5α,17β−ジヒドロキシ−11β−(1,3−ベンゾジオキソル−5−イル)−17α−トリフルオロプロピニル−エストル−9(10)−エン−3,17−ジオン−3−(環状1,2−エタンジイルアセタール)に変換した。カラムクロマトグラフィー[50:50(v/v %)のヘプタン−酢酸エチル使用]で精製後の収量は2gであった。
【0054】
b) 前のステップで得られた物質を、実施例1のd)に述べた操作に従い粗な(11β,17α)−11−(1,3−ベンゾジオキソル−5−イル)−21−トリフルオロメチル−17−ヒドロキシ−19−ノルプレグナ−4,9−ジエン−20−イン−3−オンに変換した。クロマトグラフィーで精製後、800mgの純粋な化合物を非晶質物質として得た。[α]D 20=38.1°(c=0.5; ジオキサン)。
【0055】
実施例11
次表に、本発明の化合物が糖質コルチコイド受容体(GR)に対して有する受容体親和性をプロゲステロン受容体(PR)に対する親和性と関連付けて示す。本発明の化合物の、無傷のヒト多発性骨髄腫細胞に存在する糖質コルチコイド受容体に対する親和性を測定し、デキサメタゾンの親和性と比較した(H. J.Kloosterboer等, J. Steroid Biochem. 31, pp.567−571, 1988に記載の操作による)。本発明の化合物の、ヒト乳癌(breast tumor)細胞に存在する細胞質プロゲステロン受容体に対する親和性を測定し、(16α)−16−エチル−21−ヒドロキシ−19−ノルプレグ−4−エン−3,20−ジオンの親和性と比較した(E. W. Bergink等, J. Steroid Biochem. 19, pp.1563−1570, 1983に記載の操作による)。
【0056】
【表1】
Figure 0003977462
この表から、本発明の11−(置換フェニル)−エストラ−4,9−ジエン誘導体は特異的でかつ高い糖質コルチコイド受容体親和性を示すと結論し得る。
【0057】
実施例12
本発明の化合物の抗糖質コルチコイド活性は幾つかの試験、例えばH. J.Kloosterboer等, J. Steroid Biochem. 31, pp.567−571, 1988に記載の操作に従って行なう試験によって証明できた。パラメーターとしては体重、副腎重量、胸腺重量及び脾臓重量を用いた。この試験の結果は、実施例1の化合物は20mg/kgの投与量で、前記4種のパラメーターの総てにおいてデキサメタゾンの作用を著しく抑制するというものであった。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to 11- (substituted phenyl) -estradi-4,9-diene derivatives, methods for preparing the derivatives, pharmaceutical compositions containing the derivatives, and the use of the derivatives in the manufacture of a medicament.
[0002]
[Prior art]
Various 11- (substituted phenyl) -estradi-4,9-diene derivatives are known to those skilled in the art. For example, German Patent No. 3307143 discloses steroids which may have various substituents at the 11, 13, 16 and 17 positions. According to this patent, the disclosed steroid derivatives have significant affinity for glucocorticoid and progesterone receptors, and in addition, have considerable affinity for androgen receptors. The German patent also shows that the steroid derivatives have antiglucocorticoid activity.
[0003]
However, Philbert et al. (Edited by M. K. Agarwal, Antihornes in Health and Disease, Front Home. Res. Basel, Karger, 1991, vol. 19, pp. 1-17) is disclosed in the above-mentioned German patent. The (substituted phenyl) -estradi-4,9-diene derivative isin vivoAnti-glucocorticoid steroids that are not very active [eg 11- (m-methoxyphenyl)-and 11- (m-methylthiophenyl) -derivatives] or have a relatively high progesterone receptor binding affinity [11 -(P-methoxyphenyl)-and 11- (p-methylthiophenyl) -derivatives etc.]. Such properties severely limit the therapeutic potential of the compound.in vivoLess active derivatives must be administered in large quantities when used therapeutically. As a result, the incidence of harmful side effects is likely to increase. Moreover, a high progesterone receptor binding affinity may lead to (anti) progestagenic activity, which may result in the compound exhibiting more than one (anti) hormonal activity, thereby allowing the compound to have a particularly long-term treatment. It means that clinical use is limited.
[0004]
[Problems to be solved by the invention]
That is, it has high glucocorticoid receptor binding affinity and highin vivoThere is a need for compounds that also have antiglucocorticoid activity while having low other hormonal activities such as androgenic and progestagen activities.
[0005]
[Means for Solving the Problems]
The inventor has the formula I
[0006]
[Chemical 3]
Figure 0003977462
[0007]
[In the formula
A is a 5- or 6-membered ring residue having two heteroatoms that are not bonded to each other, independently O or S, which ring is optionally substituted with one or more halogen atoms; Or
A is a 5- or 6-membered ring residue having one heteroatom that is O or S bonded to a phenyl group at the position indicated by an asterisk and having no carbon-carbon double bond. Is optionally substituted with one or more halogen atoms,
R1Is H or 1-oxo (C1~ CFour) Alkyl,
R2Is H, (C1~ C8) Alkyl, halogen or CFThreeAnd
X is selected from (H, OH), O and NOH;
The dashed line represents the bond that may be present. The 11- (substituted phenyl) -estradi-4,9-diene derivative has a specific and high glucocorticoid receptor binding affinity, andin vivoIt was found to be highly active and show predominate antiglucocorticoid activity.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
This compound has no apparent affinity for inorganic corticoids, progesterone, estrogen and androgen receptors and exhibits a clean side effect profile.
[0009]
The 11- (substituted phenyl) -estradi-4,9-diene derivatives of the present invention are Cushing's syndrome, diabetes, glaucoma, sleep disorder, depression, anxiety, atherosclerosis, hypertension, steatosis, osteoporosis, And can be used for the prevention and treatment of glucocorticoid-dependent diseases or conditions such as drug withdrawal symptoms and their mixed conditions.
[0010]
Preferred compounds according to the invention are those in which one or more heteroatoms are O, the 5- or 6-membered ring is optionally substituted with one or more fluorine atoms, R1Is an 11- (substituted phenyl) -estradi-4,9-diene derivative in which X is H and X is O or NOH.
[0011]
Further preferred compounds are 11- (substituted phenyl) -estradi-4,9-diene derivatives in which A is a 5-membered ring residue. Particularly preferred are 11- (substituted phenyl) -estradi-4,9-diene derivatives having two heteroatoms where A is O.
[0012]
R2Particularly preferred are 11- (substituted phenyl) -estradi-4,9-diene derivatives wherein is methyl and the dashed line represents a bond.
[0013]
The most preferred compound is (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one.
[0014]
The term “halogen” means a fluorine, chlorine, bromine or iodine atom. Preferred halogen in ring A is fluorine, and R2When is a halogen, chlorine is preferred.
[0015]
R1And R2Used in the definition of “(C1~ CFour) Alkyl "and" (C1~ C8The term “) alkyl” means alkyl groups having 1 to 4 and 1 to 8 carbon atoms, respectively, such as methyl, ethyl, propyl, isopropyl, butyl, s-butyl, t-butyl, pentyl. , Neopentyl, hexyl, octyl and the like.
[0016]
The 11- (substituted phenyl) -estradi-4,9-diene derivatives according to the present invention have the formula II
[0017]
[Formula 4]
Figure 0003977462
[0018]
[In the formula, A, R2And the dashed lines are as defined in claim 1 and R1Is H and P is a protected keto group] is dehydrated and deprotected, then optionally 17β-OH is esterified by reaction with a suitable carboxylic acid to give R1Is 1-oxo (C1~ CFour) Derivatives that are alkyl can be obtained, and optionally prepared by methods that convert the 3-oxo group to the corresponding 3-hydroxy or 3-oxime. If the 3-oxo group is reduced using an appropriate reducing agent such as sodium borohydride, a 3-hydroxy derivative can be produced. 3-Oxime derivatives can be prepared by hydroxylamine treatment in a suitable solvent such as pyridine.
[0019]
Derivatives of formula II can be prepared by well-known methods disclosed and used for the preparation of steroids.
[0020]
One suitable method for the preparation of derivatives of formula II starts from estra-4,9-diene-3,17-dione. The 17-keto group is selectively reduced with, for example, sodium borohydride to 17β-OH, 17α-H, and then the 3-keto group is a ketal with, for example, ethylene glycol, triethyl orthoformate and p-toluenesulfonic acid. The 3-keto protected estra-5 (10), 9 (11) -diene-3,17-dione is obtained by protecting by oxidation and oxidizing the 17-hydroxy group with, for example, pyridinium chlorochromate. Alkylation at position 17 (17α-alkynyl, 17β-OH derivative is obtained) and then the 5 (10) double bond is peroxidized in dichloromethane, for example according to the method disclosed in European patent application 0 298 020 Epoxidation with hydrogen, trifluoroacetophenone and pyridine provides 3-keto protected 5α, 10α-epoxy-17α-alkynyl-17β-hydroxy-estol-9 (11) -en-3-one. Then from this epoxide derivative, for example the formula
[0021]
[Chemical formula 5]
Figure 0003977462
[0022]
A compound of formula II is prepared by reacting with an organometallic compound wherein X is an (alkali) metal such as lithium or a magnesium halide, preferably magnesium bromide.
[0023]
Suitable protecting groups and methods for removing those groups are described, for example, in T.W. W. Green, Protective Groups in Organic Synthesis, Wiley, NY, 1981, are known to those skilled in the art. A particularly suitable protecting group for protecting the keto group is an acetal, for example 1,2-ethylene ketal.
[0024]
The compound of the present invention can be administered orally or parenterally to a human preferably at a daily dose of 0.001 to 100 mg, preferably 0.01 to 10 mg per kg body weight. The compounds of the present invention are described, for example, in the standard reference, Gennaro et al., Remington's Pharmaceutical Sciences, 18th ed. , Mack Publishing Company, 1990 (especially see Part 8: Pharmaceutical Preparations and Therapeutic Manufacturing) and mixed with pharmaceutical auxiliary substances and compressed into solid dosage units such as pills and tablets. Can be processed into capsules or suppositories. If a liquid suitable for pharmaceutical use is used, the compounds of the present invention can also be applied in the form of solutions, suspensions, emulsions, for example as injections or eye drops or as sprays such as nasal sprays. Is possible.
[0025]
In the production of dosage units, eg tablets, the use of conventional additives such as excipients, colorants, polymer binders and the like is contemplated. In general, any additive can be used as long as it is pharmaceutically acceptable and does not interfere with the function of the active compound.
[0026]
Suitable carriers for use in compositions that allow administration of the compounds of the present invention include lactose, starch, cellulose derivatives, etc., or mixtures thereof, used in suitable amounts.
[0027]
【Example】
The invention is further illustrated by the following examples.
[0028]
Example 1
(11β, 17β) -11- (1,3-Benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one
a) A solution prepared by reacting 19.3 g (788 mmol) of Mg with 58 ml (775 mmol) of ethyl bromide dissolved in 1 l of THF was cooled to 0 to 5 ° C. 83 ml (1.46 mol) of propyne (pre-condensed in a dry ice / acetone cooling cylinder) was slowly aerated through the Grignard solution. Thereafter, 50 g (159 mmol) of estra-5 (10), 9 (11) -diene-3,17-dione-3- (cyclic 1,2-ethanediyl acetal) (European Patent No. 1) dissolved in 200 ml of THF. No. 0683172) was added dropwise to the above solution while cooling with ice. Stirring was continued for 1 hour at ambient temperature. Work-up was done by pouring the mixture into a saturated aqueous solution of ammonium chloride followed by extraction with ethyl acetate (twice). The organic layer is washed with brine, dried over anhydrous magnesium sulfate, filtered and evaporated to 58.4 g of crude 17α-propynyl-17β-hydroxy-estradi-5 (10), 9 (11) -diene- 3-one-3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0029]
b) The product obtained in a) was dissolved in 809 ml dichloromethane. To this was added 4.8 ml pyridine, 15.2 ml trifluoroacetophenone and 219 ml 30% hydrogen peroxide and the resulting biphasic system was vigorously stirred at ambient temperature for 36 hours. The mixture was poured into water and the organic layer was separated and washed twice with a saturated solution of sodium thiosulfate. Dehydrated over anhydrous magnesium sulfate, filtered and evaporated to give a semi-solid residue. Crystallization from diethyl ether, m.p. p. 29.4 g of 5α, 10α-epoxy-17α-propynyl-17β-hydroxy-estol-9 (11) -en-3-one-3- (cyclic 1,2-ethanediyl acetal) at 191 ° C. were obtained.
[0030]
c) 3,4- (methylenedioxo) phenyl prepared from 1.9 g (77.6 mmol) Mg and 9.27 ml (77.0 mmol) 4-bromo-1,2- (methylenedioxo) benzene To a solution of magnesium bromide dissolved in 125 ml dry THF was added 534 mg CuCl at 0-5 ° C. After stirring at 0-5 ° C. for 30 minutes, 9.5 g (25.7 mmol) of 5α, 10α-epoxy-17α-propynyl-17β-hydroxy-estol-9 (11) -ene-dissolved in 125 ml of dry THF 3-one-3- (cyclic 1,2-ethanediyl acetal) was added while maintaining the temperature below 10 ° C. Stirring was continued for 1 hour at ambient temperature. Work-up was performed by pouring the mixture into a saturated solution of ammonium chloride and extracting with ethyl acetate (twice). The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated. The residue is triturated with heptane to give 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α-propynyl-estol-9-en- of sufficient purity to be used in the next step. 12.25 g of 3-one-3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0031]
d) 5 g (10.2 mmol) of the compound obtained in c) was dissolved in 150 ml of acetone. The solution was cooled to 0-5 ° C. and 10 ml of 6N H2SOFourAfter the addition, the mixture was stirred for 1 hour. The cold solution was then poured into a saturated solution of sodium bicarbonate and the mixture was extracted with ethyl acetate (twice). The combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated. Chromatography with heptane-ethyl acetate [80:20 (v / v%)] as eluent gives 3 g (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17 -(1-Propinyl) estradi-4,9-dien-3-one was obtained. Crystallization from diethyl ether, m.p. p.2.4 g of crystals at 212.6 to 214 ° C. were obtained.
[0032]
Example 2
3E- and 3Z- (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one oxime
1.3 g (3 mmol) of the product obtained in d) of Example 1 was dissolved in 33 ml of pyridine. To this was added 1.05 g (15 mmol) of hydroxylamine hydrochloride and the mixture was stirred at room temperature for 2 hours. The mixture was poured into water, neutralized with dilute hydrochloric acid and extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, filtered and evaporated to dryness. The crude oxime was subjected to chromatographic separation using silica gel and heptane-ethyl acetate [70:30 (v / v%)] as eluent. As a result, specific rotation [α]D 20= + 64 ° (c = 0.5; dioxane) (3E, 11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4, 9 g of 9-dien-3-one oxime and specific rotation [α]D 20= + 36 ° (c = 0.5; dioxane) (3Z, 11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4, 400 mg of 9-dien-3-one oxime was obtained.
[0033]
Example 3
(11β, 17β) -11- (2,3-dihydro-1,4-benzodioxin-6-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one
a) According to the procedure described in c) of Example 1, 6.02 g (28 mmol) 6-bromo-1,4-benzodioxane, 729 mg (30 mmol) Mg, 90 mg CuCl, 2.5 g ( 2.8 g of 5α, 17β-dihydroxy-11β- (2,3-dihydro-1,4-benzodioxin-6-yl) -17α-propynyl from the epoxide prepared in b) of Example 1 -Estol-9-en-3-one-3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0034]
b) Following the procedure described in Example 1 d), the above-obtained material was hydrolyzed and then subjected to chromatographic purification to 2.22 g of (11β, 17β) -11- (2,3 -Dihydro-1,4-benzodioxin-6-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one was obtained. Crystallization from diethyl ether-diisopropyl ether, m.p. p. 1.78 g of crystals at 200 to 202 ° C. were obtained.
[0035]
Example 4
(11β, 17β) -11- (2,2-difluoro-1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one
a) According to the procedure described in c) of Example 1, 5.2 g of 2,2- (difluoromethylene-dioxo) phenylmagnesium bromide (J. et. Org. Chem. 37, P. 673, 1972) with 2 g of 5α, 10α-epoxy-17α-propynyl-17β-hydroxy-estol-9 (11) -en-3-one-3- (cyclic 1,2-ethanediyl acetal) and Cu catalyst Under the Grignard reaction, 2.7 g of 11β- (2,2-difluoro-1,3-benzodioxol-5-yl) -5α, 17β-dihydroxy-17α-propynyl-estol-9-en-3-one -3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0036]
b) According to the procedure described in d) of Example 1, the above-obtained material was hydrolyzed and subsequently subjected to chromatographic purification to obtain a specific rotation [α].D 20= + 14 ° (c = 1; dioxane) (11β, 17β) -11- (2,2-difluoro-1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradiate 1.5 g of 4,9-dien-3-one was obtained.
[0037]
Example 5
(11β, 17β) -11- [6- (2,3-dihydrobenzofuranyl)]-17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one
a) According to the procedure described in Example 1 c), 4.8 g (24 mmol) of 6-bromo-2,3-dihydrobenzofuran (see below), 583 mg (24 mmol) of Mg, 120 mg of CuCl, 2.1 g of 5α, 17β-dihydroxy-11β- (2,3-dihydrobenzofuran-6-yl) -17α-propynyl-estol from 2.22 g (6 mmol) of the epoxide prepared in b) of Example 1 -9-ene-3-one-3- (cyclic 1,2-ethanediyl acetal) was obtained as a white amorphous material, which could be crystallized from diethyl ether.
[0038]
b) Following the procedure described in d) of Example 1, the above material obtained above was hydrolyzed and then subjected to chromatographic purification to 1.46 g of (11β, 17β) -11- [6- ( 2,3-dihydrobenzofuranyl)]-17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one, the specific rotation [α]D 20= + 48 ° (c = 1; dioxane) as a white amorphous material.
[0039]
6-Bromo-2,3-dihydrobenzofuran
a) 4.8 g (10 mmol) of 2,3-dihydro-6-trifluoromethylsulfonyloxy-benzene in 6-hydroxycoumaran (J. et. Am. Chem. Soc. 70, P. 3620, 1948) and 23.6 g (192 mmol) of N, N-dimethylaminopyridine were dissolved in 400 ml of dry dichloromethane. The solution was cooled to −60 ° C. and 8.52 ml of trifluoromethanesulfonic anhydride dissolved in 120 ml of dry dichloromethane was slowly added dropwise thereto. After stirring at −60 ° C. for 45 minutes, the reaction was stopped by pouring the reaction mixture into a saturated solution of sodium bicarbonate. Extraction with dichloromethane and dehydration with sodium sulfate gave a crude triflate. Purification by column chromatography [on silica gel using 90:10 (v / v%) heptane-ethyl acetate as eluent] gave 8.4 g of pure triflate.
[0040]
b) 2,3-dihydro-6-trimethylstannyl-benzene
8.04 g (30 mmol) of the triflate prepared as described above was dissolved in 135 ml of dioxane, and 15 g (45 mmol) of hexamethylditine, 3.81 g (90 mmol) of lithium chloride and 700 mg of Pd (φThreeP)Four(Φ = phenyl) was added and the mixture was refluxed for 17 hours. An additional 500 mg of Pd (φThreeP)FourAnd reflux was continued for an additional 15 hours. Completion of the reaction was confirmed by GC analysis. Workup was performed by adding 45 ml of 1M aqueous potassium fluoride solution, stirring for 1 hour and filtering through celite. Evaporation and purification by column chromatography gave 8.1 g of 2,3-dihydro-6-trimethylstannyl-benzene.
[0041]
c) 6-Bromo-2,3-dihydrobenzofuran
8.1 g (28.5 mmol) of 2,3-dihydro-6-trimethylstannyl-benzene was dissolved in 100 ml of dry dichloromethane. The mixture is ice-cooled and Br2Was slowly added until an orange color remained (addition of about 1 equivalent). The mixture was concentrated and purified by column chromatography using 95: 5 (v / v%) heptane-ethyl acetate as eluent to yield 4.5 g of 6-bromo-2,3-dihydrobenzofuran as a colorless oil. Obtained.
[0042]
Example 6
(11β, 17α) -11- (1,3-Benzodioxol-5-yl) -17-hydroxy-19,21,27-trinorcholesta-4,9-diene-20 (22) -in-3-one
a) 230 ml of 3,4- (methylenedioxo) phenylmagnesium bromide prepared from 11.52 g (473 mmol) of magnesium and 57.64 ml (465 mmol) of 4-bromo-1,2-methylenedioxobenzene 46 g (139.5 mmol) of 5α, 10α-epoxy-estol-9 (11) -ene-3,17-dione-3- (cyclic 1,2-ethanediyl) at 0-5 ° C. Acetal) and 2.1 g CuCl were added dropwise to a solution of 465 ml dry THF. After stirring for 1 hour at 0-5 ° C., the workup was carried out by pouring the mixture into a saturated solution of ammonium chloride. Extraction with ethyl acetate and dehydration with magnesium sulfate gave crude 5α-hydroxy-11β- (1,3-benzodioxol-5-yl) -estr-9 (10) -en-3,17-dione-3- (Cyclic 1,2-ethanediyl acetal) was obtained. Purification by column chromatography gave 56.3 g of pure product as an amorphous foam.
[0043]
b) A solution of 7.1 ml (60 mmol) of hexyne in 100 ml of dry THF is treated with 35.8 ml of 1.4 M n-BuLi at −50 ° C., which is treated with the product 4 obtained in a) A solution prepared by dissolving 0.52 g (10 mmol) in 50 ml of dry THF was added dropwise. The solution was warmed to −20 ° C. and after 2 hours the reaction was confirmed complete by TLC. 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α-hexynyl-estol-9 (10)-of sufficient purity to be used in the next step with normal workup 4.9 g of ene-3,17-dione-3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0044]
Similarly, b1) 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α-pentynyl-estol-9 (10) -ene-3,17-dione-3- (cyclic 1 B2) 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α-octynyl-estol-9 (10) -en-3,17-dione-3 -(Cyclic 1,2-ethanediyl acetal); and b3) 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α-isopentynyl-estol-9 (10) -ene-3, 17-dione-3- (cyclic 1,2-ethanediyl acetal) was also produced.
[0045]
c) 1.2 g of the product obtained in b) was dissolved in 60 ml of acetone. The solution was cooled to 0-5 ° C. and 2.4 ml of 6N H2SOFourThe solution was added. After 1 hour, the mixture was neutralized with 1N NaOH solution, followed by extraction with ethyl acetate, drying and evaporation of the solvent. Purify by chromatography, [α]D 20= 26 ° (c = 1; dioxane) pure (11β, 17α) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-19,21,27-trinorcholesta-4,9 660 mg of -diene-20 (22) -in-3-one was obtained.
[0046]
Similarly, c1) [α]D 20= 25.8 ° (c = 1; dioxane) (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-pentynyl) estradi-4,9- Dien-3-one; c2) [α]D 20= 13.4 ° (c = 0.5; dioxane) (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-octynyl) estradi-4, 9-dien-3-one; and c3) [α]D 20= 22.7 ° (c = 0.5; dioxane) (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-19,21-dinorcholesta-4,9-diene -20 (22) -in-3-one was produced.
[0047]
Example 7
(11β, 17α, 20E) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-19,21,27-trinorcholesta-4,9,20 (22) -trien-3-one
a) 342 mg (9 mmol) of LiAlHFourWas suspended in 35 ml of dry THF. Under ice cooling, a solution of 1.6 g of the material obtained in b) of Example 6 was added and the mixture was refluxed for 24 hours. Work-up was performed by careful addition of 1.75 ml of a saturated solution of magnesium sulfate, stirring was continued for 1 hour, after which solid magnesium sulfate was added and the mixture was filtered through celite. 700 mg crude 20E-5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α- (1-hexenyl) -estol-9 (10) by evaporation and purification by column chromatography -Ene-3,17-dione-3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0048]
b) According to the procedure described in d) of Example 1, the above-obtained material was converted to (11β, 17α, 20E) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-19, Conversion to 21,27-trinorcholesta-4,9,20 (22) -trien-3-one. This substance is [α]D 20= 75.7 ° (c = 1; dioxane) as an amorphous solid.
[0049]
Example 8
(11β, 17α, 20Z) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-19,21,27-trinorcholesta-4,9,20 (22) -trien-3-one
a) 1.9 g of the material obtained in b) of Example 6 was dissolved in 50 ml of ethyl acetate. 171 mg of Lindlar catalyst was added and the mixture was shaken in a hydrogen atmosphere until absorption stopped. The mixture was filtered through celite and evaporated to give almost pure 20Z, 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl) -17α- (1-hexenyl) -estr-9 (10) -Ene-3,17-dione-3- (cyclic 1,2-ethanediyl acetal) was obtained.
[0050]
b) According to the procedure described in d) of Example 1, the previously obtained material is converted to the desired (11β, 17α, 20Z) -11- (1,3-benzodioxol-5-yl) -17-hydroxy- It was converted to 19,21,27-trinorcholesta-4,9,20 (22) -trien-3-one. This substance is [α]D 20= 107 ° (c = 0.5; dioxane) as an amorphous solid.
[0051]
Example 9
(11β, 17α) -11- (1,3-benzodioxol-5-yl) -21-chloro-17-hydroxy-19-norpregna-4,9-diene-20-in-3-one
a) 12 ml of a 2.2M diethyl ether solution of methyllithium was cooled to 0 ° C. To this solution was slowly added 1.32 g of trans-1,2-dichloroethene dissolved in 5.5 ml of diethyl ether, thereby maintaining the temperature below 10 ° C. Stirring was continued for 1.5 hours at ambient temperature. During this time a white suspension of LiCl was formed. Next, 1.5 g of the steroid obtained in Example 6 a) dissolved in dry toluene was added, and the mixture was refluxed for 2.5 hours. Completion of the reaction was confirmed by TLC. The mixture is poured into a saturated solution of ammonium chloride, extracted with ethyl acetate, dried and evaporated to give a workup, whereby 1.5 g of crude 5α, 17β-dihydroxy-11β- (1,3- Benzodioxol-5-yl) -17α-chloroethynyl-estol-9 (10) -ene-3,17-dione-3- (cyclic 1,2-ethanediyl acetal) was obtained as a white glass.
[0052]
b) The material obtained in the previous experiment was crude (11β, 17α) -11- (1,3-benzodioxol-5-yl) -21-chloro-17 according to the procedure described in d) of Example 1. Conversion to -hydroxy-19-norpregna-4,9-diene-20-in-3-one. Crystallization from diethyl ether, m.p. p. 464 mg of pure compound at 209 ° C. was obtained.
[0053]
Example 10
(11β, 17α) -11- (1,3-Benzodioxol-5-yl) -21-trifluoromethyl-17-hydroxy-19-norpregna-4,9-diene -20-in-3-one
a)J. et. Org. Chem. 19, P. 6051, 1995, 2 g (4.4 mmol) of the steroid produced in a) of Example 6, 1.94 g (11 mmol) of 1-bromo-1-trifluoromethylethene and 20 mmol of LDA. 5α, 17β-dihydroxy-11β- (1,3-benzodioxol-5-yl)-(prepared from 12.5 ml of 1.6M solution of n-BuLi and 3.1 ml of N, N-diisopropylamine) Conversion to 17α-trifluoropropynyl-estol-9 (10) -ene-3,17-dione-3- (cyclic 1,2-ethanediyl acetal). The yield after purification by column chromatography [using 50:50 (v / v%) heptane-ethyl acetate] was 2 g.
[0054]
b) The material obtained in the previous step is crude (11β, 17α) -11- (1,3-benzodioxol-5-yl) -21-trifluoromethyl according to the procedure described in d) of Example 1. Conversion to -17-hydroxy-19-norpregna-4,9-diene-20-in-3-one. After purification by chromatography, 800 mg of pure compound was obtained as an amorphous material. [Α]D 20= 38.1 ° (c = 0.5; dioxane).
[0055]
Example 11
The following table shows the receptor affinity that the compounds of the present invention have for the glucocorticoid receptor (GR) in relation to the affinity for the progesterone receptor (PR). The affinity of the compounds of the present invention for the glucocorticoid receptor present in intact human multiple myeloma cells was measured and compared to the affinity of dexamethasone (HJ Kloosterboer et al.,J. et. Steroid Biochem. 31, Pp. 567-571, 1988). The affinity of the compounds of the present invention for the cytoplasmic progesterone receptor present in human breast tumor cells was determined and (16α) -16-ethyl-21-hydroxy-19-norpreg-4-ene-3,20 -Compared with the affinity of dione (E. W. Bergink et al.,J. et. Steroid Biochem. 19, Pp. 1563-1570, 1983).
[0056]
[Table 1]
Figure 0003977462
From this table it can be concluded that the 11- (substituted phenyl) -estradi-4,9-diene derivatives of the present invention exhibit a specific and high glucocorticoid receptor affinity.
[0057]
Example 12
The antiglucocorticoid activity of the compounds of the present invention has been determined in several tests, such as H.P. J. et al. Kloosterboer, etc.J. et. Steroid Biochem. 31, Pp. It was proved by a test carried out according to the procedure described in 567-571, 1988. The body weight, adrenal weight, thymus weight, and spleen weight were used as parameters. The result of this test was that the compound of Example 1 significantly suppressed the action of dexamethasone in all four parameters at a dose of 20 mg / kg.

Claims (9)

式I
Figure 0003977462
〔式中
Aは、独立にOまたはSである、互いに結合しない2個のヘテロ原子を有する5または6員環の残基であり、この環は場合によっては1個以上のハロゲン原子で置換されており、または
Aは、星印で示した位置でフェニル基に結合するOまたはSである1個のヘテロ原子を有する、炭素−炭素二重結合を有しない5または6員環の残基であり、この環は場合によっては1個以上のハロゲン原子で置換されており、且つ、当該5または6員環が縮合するフェニル環の2個の原子間の芳香族二重結合以外には二重結合は存在しない、
はHまたは1−オキソ(C〜C)アルキルであり、
はH、(C〜C)アルキル、ハロゲンまたはCFであり、
Xは(H,OH)、O及びNOHの中から選択され、
破線は、場合によっては存在する結合を表わす〕の11−(置換フェニル)−エストラ−4,9−ジエン誘導体。
Formula I
Figure 0003977462
[Wherein A is a 5- or 6-membered ring residue having two heteroatoms that are not bonded to each other, independently O or S, which ring is optionally substituted with one or more halogen atoms. Or A is a 5- or 6-membered ring residue having one heteroatom that is O or S bonded to the phenyl group at the position indicated by an asterisk and having no carbon-carbon double bond Yes, this ring is optionally substituted with one or more halogen atoms, and is double except for an aromatic double bond between two atoms of the phenyl ring to which the 5- or 6-membered ring is fused. No bond exists,
R 1 is H or 1-oxo (C 1 -C 4 ) alkyl;
R 2 is H, (C 1 -C 8 ) alkyl, halogen or CF 3 ;
X is selected from (H, OH), O and NOH;
The broken line represents an optionally present bond.] 11- (substituted phenyl) -estradi-4,9-diene derivative.
1個以上のヘテロ原子がOであり、5または6員環は1個以上のフッ素原子で任意に置換されており、RはHであり、XはOまたはNOHであることを特徴とする請求項1に記載の誘導体。Is one or more heteroatoms O, 5 or 6-membered ring is optionally substituted with one or more fluorine atoms, R 1 is H, X is characterized by O or NOH The derivative according to claim 1. Aが5員環の残基であることを特徴とする請求項1または2に記載の誘導体。  The derivative according to claim 1 or 2, wherein A is a 5-membered ring residue. AがOである2個のヘテロ原子を有することを特徴とする請求項1から3のいずれか1項に記載の誘導体。  4. Derivative according to any one of claims 1 to 3, characterized in that it has two heteroatoms in which A is O. がメチルであり、破線は結合を表わすことを特徴とする請求項1から4のいずれか1項に記載の誘導体。The derivative according to any one of claims 1 to 4, wherein R 2 is methyl and the broken line represents a bond. 式(11β,17β)−11−(1,3−ベンゾジオキソル−5−イル)−17−ヒドロキシ−17−(1−プロピニル)エストラ−4,9−ジエン−3−オンを有することを特徴とする請求項1に記載の誘導体。  It has the formula (11β, 17β) -11- (1,3-benzodioxol-5-yl) -17-hydroxy-17- (1-propynyl) estradi-4,9-dien-3-one The derivative according to claim 1. 請求項1から6のいずれか1項に記載の誘導体を製造する方法であって、式II
Figure 0003977462
〔式中A、R及び破線は請求項1に定義したとおりであり、RはHであり、Pは保護されたケト基である〕の化合物を脱水及び脱保護し、その後場合によっては17β−OHをエステル化してRが1−オキソ(C〜C)アルキルである誘導体を得、また場合によっては3−オキソ基を変換して対応する3−ヒドロキシまたは3−オキシムを有する誘導体を得ることを特徴とする方法。
A process for producing the derivative according to any one of claims 1 to 6, comprising
Figure 0003977462
Dehydrating and deprotecting a compound of the formula wherein A, R 2 and the dashed line are as defined in claim 1, R 1 is H and P is a protected keto group; Esterification of 17β-OH yields a derivative in which R 1 is 1-oxo (C 1 -C 4 ) alkyl, and optionally converts the 3-oxo group to have the corresponding 3-hydroxy or 3-oxime A method characterized in that a derivative is obtained.
請求項1から6のいずれか1項に記載の誘導体と、医薬に適する補助物質とを含有する医薬組成物。  A pharmaceutical composition comprising the derivative according to any one of claims 1 to 6 and an auxiliary substance suitable for a medicine. 治療用であることを特徴とする請求項1から6のいずれか1項に記載の誘導体。  The derivative according to any one of claims 1 to 6, wherein the derivative is used for treatment.
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